body a h1 h2 h3 h4 {
	margin: 0px;
	padding: 0px;
}
.top{
	width: 100%;
}
.nav{
	width: 100%;
	height: 160px;
	background-color: #000;
	filter:alpha(opacity=20);
	  /* CSS3 standard */
	  opacity:0.5;
	  position:fixed;
	  bottom: 60px;
}
.input-group{
	margin: 20px 10px 0px 10px;
	 border: 0px solid black;
	  /* for IE */
}